Company lists · Data refreshed September 2026

Top 25 Wellhead equipment installation companies based in the United States

Name: Wellhead equipment installation companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 619 companies tracked

RevenueBase identified 619 wellhead equipment installation companies headquartered in the United States as of September 2026 and tracks 24,574 professional contacts across them, including 5,825 with verified work emails. Houston is the largest hub.

This list covers wellhead equipment installation companies headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 22, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 22, 2026 86% judged on-target in blind review

619Companies

24,574Contacts tracked

5,825Verified emails

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The 25 largest wellhead equipment installation companies based in the United States

Ranked by team size

Top 25 of 619 wellhead equipment installation companies based in the United States, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to wellhead equipment installation companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	OIL States International	Indirect evidence	Houston, TX, United StatesHQ checked Sep 22, 2026	5,001-10,000	2,215 contacts →
	Indirect evidence “Oil States International, Inc.” Source: RevenueBase Database · checked Sep 22, 2026
2	Superior Energy Services	Indirect evidence	Houston, TX, United StatesHQ checked Sep 22, 2026	1,001-5,000	1,938 contacts →
	Indirect evidence “For oil & gas exploration and production companies worldwide, Superior Energy Services is an oilfield products and services company with global reach, financial stability and…” Source: RevenueBase Database · checked Sep 22, 2026
3	Stewart & Stevenson	Partial evidence	Houston, TX, United StatesHQ checked Sep 22, 2026	1,001-5,000	1,135 contacts →
	Partial evidence “Stewart & Stevenson is a leading designer, manufacturer and provider of specialized equipment and aftermarket parts and service for the oil and gas and other industries that we…” Source: RevenueBase Database · checked Sep 22, 2026
4	Innovex	Indirect evidence	Humble, TX, United StatesHQ checked Sep 22, 2026	1,001-5,000	844 contacts →
	Indirect evidence “Innovex International, Inc (NYSE: INVX) is a Houston-based company established in 2024 following the merger of Dril-Quip, Inc and Innovex Downhole Solutions.” Source: RevenueBase Database · checked Sep 22, 2026
5	Nine Energy Service	Indirect evidence	Houston, TX, United StatesHQ checked Sep 22, 2026	1,001-5,000	712 contacts →
	Indirect evidence “With a culture built on high performance and flawless execution, Nine Energy Service is a unique kind of oilfield services company, offering industry-shaping completion solutions…” Source: RevenueBase Database · checked Sep 22, 2026
6	Cactus Wellhead	Strong evidence	Houston, TX, United StatesHQ checked Sep 22, 2026	1,001-5,000	703 contacts →
	Strong evidence “Cactus designs, manufactures, sells and rents a range of highly-engineered wellheads and pressure control equipment.” Source: RevenueBase Database · checked Sep 22, 2026
7	Worldwide Oilfield Machine	Partial evidence	Houston, TX, United StatesHQ checked Sep 22, 2026	1,001-5,000	635 contacts →
	Partial evidence “Worldwide Oilfield Machine (WOM) is a multinational equipment manufacturer specializing in solutions for drilling, testing, production and intervention operations.” Source: RevenueBase Database · checked Sep 22, 2026
8	Ranger Energy Services, LLC	Indirect evidence	Houston, TX, United StatesHQ checked Sep 22, 2026	1,001-5,000	501 contacts →
	Indirect evidence “Ranger is one of the largest providers of high specification mobile rig well services, cased hole wireline services, and ancillary services in the U.S.” Source: RevenueBase Database · checked Sep 22, 2026
9	Thru Tubing Solutions	Partial evidence	Newcastle, OK, United StatesHQ checked Sep 22, 2026	501-1,000	428 contacts →
	Partial evidence “Only Thru Tubing Solutions offers the specialized downhole equipment and services to deliver the results you need, right when you need them.” Source: RevenueBase Database · checked Sep 22, 2026
10	Deep Well Services	Indirect evidence	Zelienople, PA, United StatesHQ checked Sep 22, 2026	501-1,000	384 contacts →
	Indirect evidence “Established in 2008, Deep Well Services (DWS) is an oilfield services company specializing in the most complex and difficult types of well work utilizing hydraulic completion…” Source: RevenueBase Database · checked Sep 22, 2026
11	Express Energy Services	Indirect evidence	Houston, TX, United StatesHQ checked Sep 22, 2026	501-1,000	379 contacts →
	Indirect evidence “Express Energy Services, a leading oilfield services company, is active in every major hydrocarbon basin in the United States and is a premier provider of products and services…” Source: RevenueBase Database · checked Sep 22, 2026
12	NCS Multistage	Indirect evidence	Houston, TX, United StatesHQ checked Sep 22, 2026	201-500	301 contacts →
	Indirect evidence “Since our founding in 2006, NCS Multistage has grown to be a leading provider of engineered products and support services for oil and natural gas wells around the world.” Source: RevenueBase Database · checked Sep 22, 2026
13	Leam Drilling Services	Indirect evidence	New Iberia, LA, United StatesHQ checked Sep 22, 2026	501-1,000	291 contacts →
	Indirect evidence “LEAM Drilling Systems, Inc.” Source: RevenueBase Database · checked Sep 22, 2026
14	Greene's Energy Group	Indirect evidence	Houston, TX, United StatesHQ checked Sep 22, 2026	201-500	285 contacts →
	Indirect evidence “Greene’s Energy Group offers a range of support services and products to the oil and gas industry.” Source: RevenueBase Database · checked Sep 22, 2026
15	Premium Oilfield Technologies	Indirect evidence	Houston, TX, United StatesHQ checked Sep 22, 2026	201-500	284 contacts →
	Indirect evidence “Since 2003, Premium Oilfield Technologies has been supplying high quality products to the oil and gas industry.” Source: RevenueBase Database · checked Sep 22, 2026
16	Flogistix	Partial evidence	Oklahoma City, OK, United StatesHQ checked Sep 22, 2026	201-500	232 contacts →
	Partial evidence “Flogistix by Flowco specializes in wellhead compression and vapor recovery, delivering cutting-edge technology to optimize oil and gas production.” Source: RevenueBase Database · checked Sep 22, 2026
17	Yellowjacket Oilfield Services	Partial evidence	Houston, TX, United StatesHQ checked Sep 22, 2026	201-500	223 contacts →
	Partial evidence “Yellowjacket Oilfield Services offers cost-effective solutions by leveraging state of the art equipment & technology along with superior personnel.” Source: RevenueBase Database · checked Sep 22, 2026
18	Vault Pressure Control	Strong evidence	Houston, TX, United StatesHQ checked Sep 22, 2026	501-1,000	212 contacts →
	Strong evidence “A leader in wellhead, pressure control, and production tree (Christmas Tree) equipment and service solutions, Vault PC also supports a top-tier completions division, supporting…” Source: RevenueBase Database · checked Sep 22, 2026
19	Enercorp	Indirect evidence	The Woodlands, TX, United StatesHQ checked Sep 22, 2026	201-500	192 contacts →
	Indirect evidence “Are you looking to maximize production and minimize spend throughout the lifecycle of your well?” Source: RevenueBase Database · checked Sep 22, 2026
20	Butch's Companies	Indirect evidence	Levelland, TX, United StatesHQ checked Sep 22, 2026	501-1,000	189 contacts →
	Indirect evidence “Founded in 1980, Butch's has been leading the pack as the premier service provider for the oil and gas industry.” Source: RevenueBase Database · checked Sep 22, 2026
21	Oscar W. Larson Company	Indirect evidence	Clarkston, MI, United StatesHQ checked Sep 22, 2026	1,001-5,000	187 contacts →
	Indirect evidence “For 80 years, Oscar W.” Source: RevenueBase Database · checked Sep 22, 2026
22	Flowco Production Solutions	Indirect evidence	Houston, TX, United StatesHQ checked Sep 22, 2026	501-1,000	186 contacts →
	Indirect evidence “Serving oil and gas basins throughout the continental US, Flowco is proud to advance the tradition of using Made in the USA, high-performance parts and components in all of our…” Source: RevenueBase Database · checked Sep 22, 2026
23	Reservoir Group	Indirect evidence	Stafford, TX, United StatesHQ checked Sep 22, 2026	201-500	178 contacts →
	Indirect evidence “Reservoir Group is a world-class niche oilfield services company that has been addressing customer challenges for more than 70 years.” Source: RevenueBase Database · checked Sep 22, 2026
24	SRI Energy, INC	Indirect evidence	Sugar Land, United StatesHQ checked Sep 22, 2026	201-500	168 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026
25	Deepsea Technologies	Partial evidence	Houston, TX, United StatesHQ checked Sep 22, 2026	51-200	166 contacts →
	Partial evidence “Deepsea Technologies, Inc.(DTI) Engineers and Manufactures a wide range of products and equipment used in subsea oil & gas field development projects.” Source: RevenueBase Database · checked Sep 22, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: wellhead equipment installation companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names wellhead equipment installation companies.
Partial evidence: Its own public description names part of wellhead equipment installation companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name wellhead equipment installation companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 619 wellhead equipment installation companies based in the United States

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Wellhead equipment installation companies based in the United States at a glance

As of Sep 22, 2026

23.7%Verified-email coverage

39.7Average contacts per company

11-50Median size (employees)

19.2%Largest-city concentration · Houston

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

168

11-50

221

51-200

150

201-500

501-1,000

1,001-5,000

5,001-10,000

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 619 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among wellhead equipment installation companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “wellhead equipment installation companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names wellhead equipment installation companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among wellhead equipment installation companies, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 5,825 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 22, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Wellhead equipment installation companies by metro

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names wellhead equipment installation companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many wellhead equipment installation companies are there based in the United States?

RevenueBase identified 619 wellhead equipment installation companies headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

OIL States International, headquartered in Houston, tops this list with the largest team on record.

Which city has the most wellhead equipment installation companies?

Houston leads with 119 headquartered companies, followed by Midland (42) and Odessa (26).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 5,825 verified decision-maker contacts tracked across these 619 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 22, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.